Open source software for recording and editing sounds without installation.
Download Portable Audacity 32-64 bit Online (0.7 MB) 02/11/23
In first screen enter Version Number: 3.5.1
Will be also extracted if found in same folder: ffmpeg-win-2.2.2.zip and FFmpeg_v2.2.2_for_Audacity_on_Windows_64bit.zip (paths added in audacity.cfg by launcher)

Extract and run AudacityPortable.
Settings of installed Audacity should be preserved.